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niahloves

  • one year ago

Which math expression represents the phrase? 9 times the sum of a number and 7 A. 9 · n + 7 B. 9 · (n + 7) C. 9 · (n – 7) D. 9 · (n · 7

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  1. welshfella
    • one year ago
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    which one do you think it is?

  2. jameshorton
    • one year ago
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    it d

  3. welshfella
    • one year ago
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    note that the number is added to 7 first before the multiply

  4. anonymous
    • one year ago
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    A

  5. welshfella
    • one year ago
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    @jameshorten plz dont just give the answer

  6. jameshorton
    • one year ago
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    yes sir or mam

  7. welshfella
    • one year ago
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    d is wrong

  8. jameshorton
    • one year ago
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    no it not

  9. jameshorton
    • one year ago
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    who ask the question

  10. jameshorton
    • one year ago
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    help me on mines

  11. welshfella
    • one year ago
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    Its not A because the multiplication is done first in A

  12. welshfella
    • one year ago
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    when you have something in parentheses ( and ) that calculation is done first

  13. welshfella
    • one year ago
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    so if i for example had to compute 3* (4 + 7) i would do the 4+7 first then multiply by 3

  14. niahloves
    • one year ago
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    so what is it

  15. welshfella
    • one year ago
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    the question says' 9 times the sum of a number and 7' - this means the x + 7 will be calculated first therefore x + 7 goes into parentheses so which one is it?

  16. niahloves
    • one year ago
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    c

  17. welshfella
    • one year ago
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    they have n not x That doesnt matter

  18. niahloves
    • one year ago
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    is it right or wrong

  19. welshfella
    • one year ago
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    why C? that has (x - 7) not (x + 7) sum = +

  20. welshfella
    • one year ago
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    take another look

  21. niahloves
    • one year ago
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    o b

  22. welshfella
    • one year ago
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    right |dw:1441131763685:dw|

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